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   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * XML format exporter class to memory storage
  19   *
  20   * @package    core_dtl
  21   * @copyright  2008 Andrei Bautu
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  defined('MOODLE_INTERNAL') || die();
  26  
  27  /**
  28   * XML format exporter class to memory storage (i.e. a string).
  29   */
  30  class string_xml_database_exporter extends xml_database_exporter {
  31      /** @var string String with XML data. */
  32      protected $data;
  33  
  34      /**
  35       * Specific output method for the memory XML sink.
  36       * @param string $text
  37       */
  38      protected function output($text) {
  39          $this->data .= $text;
  40      }
  41  
  42      /**
  43       * Returns the output of the exporters
  44       * @return string XML data from exporter
  45       */
  46      public function get_output() {
  47          return $this->data;
  48      }
  49  
  50      /**
  51       * Specific implementation for memory exporting the database: it clear the buffer
  52       * and calls superclass @see database_exporter::export_database().
  53       *
  54       * @throws dbtransfer_exception if any checking (e.g. database schema) fails
  55       * @param string $description a user description of the data.
  56       * @return void
  57       */
  58      public function export_database($description=null) {
  59          $this->data = '';
  60          parent::export_database($description);
  61      }
  62  }